§ models · storyline
Anthropic releases Sonnet 5.5, 30% faster and 30% cheaper
Anthropic releases Claude Sonnet 5.5, a faster and lower-cost complement to Opus 5.5 that delivers outputs over 30% faster and costs up to 30% less per task than Sonnet 5.
Anthropic: Anthropic releases Sonnet 5.5, saying it generates outputs 30%+ faster than Sonnet 5 and costs up to 30% less per task, and plans to release Haiku 5.5 soon — Sonnet 5.5 is a faster, lower-cost complement to Claude Opus 5.5.
Where Opus 5.5 is built for complex work requiring careful judgment …
§ sources3 publications · timeline below
- anthropic.comAnthropic releases Sonnet 5.5, saying it generates outputs 30%+ faster than Sonnet 5 and costs up to 30% less per task, and plans to release Haiku 5.5 soon (Anthropic)primary
- the-decoder.comAnthropic's Claude Sonnet 5.5 nearly matches Opus 5.5 on benchmarks while costing up to 30 percent less per task
- anthropic.comSonnet 5.5
§ how this story moved
- primary — HN Algolia — Claude / Anthropic publishes the launch post.
- The Decoder picks up coverage.
- Anthropic picks up coverage.